Despite the fact that he's 17 in the anime and 18 in the Manga, Honey is very childish. Bonnie can also be quite childish at times, but that's perfectly normal because she's only 6, (they've never said that in the anime, but that's how old I assume she is). I'm not saying Honey's childish attitude is a bad thing because heck I'm 18 and I act like a child, (although I was born pre-maturely and I have ADHD and mild Cerebral Palsy, so that's the reason for my childishness).